This long-lost masterpiece of gay erotic cinema centers on a handsome young stud who rides his motorcycle through a myriad of sexual encounters, from a soccer game's locker room to a dreamy and unsettling orgy where the film reaches its melancholic peak. Newly scanned in 2K from the original camera negative and directed with absolute grace by the mysterious Dietrich de Velsa (aka Francis Savel / Frantz Salieri): this former painter was also the owner and artistic director of one of the first transvestites' cabaret of Paris, La Grande Eugène. Years later, he collaborated with Joseph Losey on Mr. Klein (1976) and Don Giovanni (1979). EQUATION TO AN UNKNOWN is his only film and stands without a doubt as a masterpiece and the best French gay adult film ever made.

As young French couple Gilles and Marion officially separate, we see, in reverse order, the milestone moments in their relationship: Gilles revealing his unfaithfulness at a tense dinner party; Marion giving birth to their premature son while Gilles is elsewhere; Gilles and Marion's joyous wedding; and, finally, the fateful moment when they meet as acquaintances at an Italian beach resort, and their love affair begins.

Eight short films explore the subject of male infidelity. Serial cheaters, Fred and Greg, spend a night on the town doing what they do best, and with absolutely no regrets. The duo play various characters in assorted extracurricular situations, ranging from sexist to the darker sides of carnal desires.